Weird.. I checked the logs again and noticed a bunch of these errors which I'm guessing is what you ran into as well:
HTTP_ERROR: IOException: 187) 18ms, https://cloud.hubitat.com/api/API-KEY/apps/38/devices/69, Unable to resolve host "cloud.hubitat.com": No address associated with hostname
The same request went through just a few minutes ago so I think something's going on with the cloud API..
I see a couple of threads that look related to this issue: Cloud Connection Unavailable and "No response from hub error" on Cloud dashboards